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pentagon [3]
3 years ago
13

To the nearest square metre, calculate the curved surface area of the half pipe if it is 9m long? (With a radius of 2.5m)

Mathematics
1 answer:
Mice21 [21]3 years ago
4 0

Answer:

70.686 m^{2}

Step-by-step explanation:

A=2πrh (area of cylinder without top or bottom)

A = 2\pi(2.5)(9)

A = 141.372

divide by two for half of pipe.

A = 70.686

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Step-by-step explanation:

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padilas [110]
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olga_2 [115]

Answer:

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cos θ = 3 / 5

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